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Finding the Fourth Proportional to 73,268.44, 109,916.93 and 31,148.03

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Solution

The fourth proportional to 73,268.44, 109,916.93 and 31,148.03 is: 46,728.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,268.44 : 109,916.93 = 31,148.03 : x
  2. Step 2: Convert to fraction form
    73,268.44/109,916.93 = 31,148.03/x
  3. Step 3: Cross multiply
    73,268.44x = 109,916.93 × 31,148.03
  4. Step 4: Simplify right side
    73,268.44x = 3,423,696,185.81
  5. Step 5: Solve for x
    x = 3,423,696,185.81/73,268.44
  6. Step 6: Final answer
    x = 46,728.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.